Here's excerpt #3 from our conversation with alpinist and Exped ambassador Graham Zimmerman. Graham is a friend of ours who just happens to be one of the world's great alpinists. He's always full of interesting insights.

The Firn Line is a podcast about the lives of mountain climbers. Recently, host Evan Phillips sat down with Exped ambassador and big mountain alpinist Graham Zimmmerman to talk about GZ's climbs in Alaska.